Home / 13,938.47-20,906.16-4,077.83

Finding the Fourth Proportional to 13,938.47, 20,906.16 and 4,077.83

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Solution

The fourth proportional to 13,938.47, 20,906.16 and 4,077.83 is: 6,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.47 : 20,906.16 = 4,077.83 : x
  2. Step 2: Convert to fraction form
    13,938.47/20,906.16 = 4,077.83/x
  3. Step 3: Cross multiply
    13,938.47x = 20,906.16 × 4,077.83
  4. Step 4: Simplify right side
    13,938.47x = 85,251,766.43
  5. Step 5: Solve for x
    x = 85,251,766.43/13,938.47
  6. Step 6: Final answer
    x = 6,116.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.